OpenAI DevDay 2026 Heads to Fort Mason on 29 September, Then Goes Global
The San Francisco keynote streams free for anyone, and for the first time OpenAI is taking DevDay to eight more cities, from Bengaluru in October to Mexico City in November.
OpenAI's DevDay 2026 takes place on Tuesday 29 September at Fort Mason in San Francisco, and the opening keynote will be livestreamed free to anyone who wants to watch. For the first time, the company is also taking the event beyond San Francisco. Smaller "DevDay Exchange" events will run in eight cities between mid-October and mid-November.
DevDay is OpenAI's annual event for the developers who build products on its models and APIs. This year's edition also follows OpenAI's GPT-6 Astra release earlier in September, so it is a natural moment for developers to hear how the company's newest models change the tools they work with.
The San Francisco Event at a Glance
- Date: Tuesday 29 September 2026.
- Venue: Fort Mason, on San Francisco's northern waterfront.
- Keynote: livestreamed and open to everyone.
- Format: OpenAI pitches the day around technical deep dives on its APIs and tools, hands-on demos, and direct time with its own teams.
In-person places are limited, so for most developers around the world the livestream will be the main way to follow the day's announcements.
DevDay Goes Global
The bigger structural change this year is the DevDay Exchange programme. OpenAI has announced eight regional events, all scheduled after the San Francisco flagship:
- Bengaluru: 16 October
- Tokyo: 20 October
- Seoul: 22 October
- Berlin: 26 October
- Paris: 28 October
- London: 3 November
- São Paulo: 6 November
- Mexico City: 11 November
Places at the Exchange events are limited, and attendance is by application through OpenAI's events site.
Taking DevDay beyond San Francisco acknowledges what the industry already knows: most developers building on these models live nowhere near the Bay Area.
Why the Expansion Matters
The schedule is grouped by region. Asia gets three stops in a single week, from Bengaluru on 16 October to Seoul on 22 October. Europe gets Berlin, Paris and London within nine days, and Latin America closes the tour in November.
Three things stand out:
- Sequencing: every Exchange takes place after 29 September. Regional events can therefore build on whatever OpenAI announces in San Francisco, rather than competing with it.
- Time zones: a Pacific-time keynote is an evening or overnight watch for much of Europe and Asia. Local events give those developers a daytime, in-person version of the conversation.
- Local ecosystems: the chosen cities, including Bengaluru, Seoul and São Paulo, are home to large developer communities and fast-growing startup scenes. These are the markets where platform loyalty is still being won.
A Busy Month of Developer Stages
DevDay caps a crowded stretch for developer-focused events. Meta Connect runs on 23 and 24 September, with its second day dedicated to developers. Qualcomm's Snapdragon Summit takes place in Maui from 22 to 24 September. A month after DevDay, Fort Mason hosts another big developer gathering when GitHub Universe arrives on 28 and 29 October.
What to Watch on the Day
- Model access: how and when developers can build on OpenAI's latest models through the API.
- Agent tooling: the building blocks for software that takes actions, not just generates text, which has become the central theme across this autumn's developer events.
- Costs: any change to pricing or usage limits matters more to working developers than any single demo.
The Bottom Line
DevDay 2026 is really two events. There is the 29 September keynote, which anyone can stream, and an eight-city tour that runs into November. The keynote will set the agenda. The Exchanges will show how well that agenda works for developers outside Silicon Valley.
Image: Dietmar Rabich via Wikimedia Commons, CC BY-SA 4.0
Tag: Events
